Safety Test Review Flashcards
What does WHMIS stand for?
Workplace Hazardous Materials Information System
What are the 4 routes of entry?
-Inhalation
-Skin Contact
-Ingestion
-Injection
How often must you update your SDS?
Every 3 years
How many sections are in the SDS?
16
How does the Ministry of Education define “Duty of Care”?
Prudent Parent
The ‘Fire Triangle’ is made up of what 3 components?
Heat, Fuel, Oxygen
Give an example of a potential fire hazard in the shop:
-Flammable liquids/gases
-Oily rags
-Paper and wood products (wood shavings)
-Electrical apparatus
Does metal burn? (give an example)
Yes
-Steel wool
-Magnesium (very brightly)
-Titanium
Define/Explain: Fight or Flight (+Freeze)
In an emergency, you can lose 50% or more of your cognitive ability
-Chances are better of doing the right thing if you have rehearsed (fire drill)
What does RACE stand for?
R emove people (students)
A ctivate Fire Alarm
C all 911
E xtinguish
What are the contents of the 4 types of Fire extinguishers? (A, B, C, D) and for what applications?
A - Pressurized water
(Used for normal combustibles such as paper, wood, cloth, anything that burns or creates ash, etc.)
B - Dry chemical powder (sodium bicarbonate)
(Used for combustible liquids such as oil, gasoline, solvents and tars)
C - Carbon Dioxide (CO2)
(Used for fires involving electrical equipment or either of above classes)
D - Sodium Chloride *A bucket of sand will do in a pinch
(Used for flammable metals such as Magnesium and Titanium Sodium)
What does PASS stand for? (when using a fire extinguisher)
Pull
Aim
Squeeze
Sweep
How many feet away do you stand when using a fire extinguisher?
10ft away
Where is the exit when using a fire extinguisher?
Exit is to your back
(so you can leave safely in the event of needing to flee/evacuate)
What does LD50 mean? Explain
-Lethal Dose 50 (LD50) is the amount of an ingested substance that kills 50 percent of a test sample. It is expressed in mg/kg or milligrams of substance per kilogram of body weight.
-Measures the short-term poisoning potential (acute toxicity) of a material
What does Lethal Concentration mean? Explain
Lethal concentration (LC50) of a chemical (usually in the air) that kills 50% of the test animals during the observation period (usually 4 hours)
What are some factors from the Fight-or-Flight check list:
-The building is being evacuated (fire alarm is pulled)
-The fire department is being called (dial 911)
-The fire is small, contained and not spreading beyond its starting point
-The exit is clear, there is no imminent peril and you can fight the fire with your back to the exit
-You can stay low and avoid smoke
-The proper extinguisher is immediately at hand
-You have read the instructions and know how to use the extinguisher
What is the maximum permissible peak noise? (dBC)
140 dBC
What is the name of the spiral part of you ear?
Chochlea
What lines the Choclea? (we are trying to protect)
Hairs
(flatten after exposure to exessive noise)
Name 2 types of ear protection
-Earmuffs
-Earplugs / Ear caps (+disposable earplugs)
Are all disposable earplugs created equally?
(dB rating)
No
-be sure to check the manufacturer rating to know you have the correct protection for your scenario.
Explain some factors for a properly fitting earplug
-You need the right size plug for your ear canal;
your ears may even need two different sizes. If the plug doesn’t make a good seal in your ear canal, it won’t protect your hearing.
-If the plug feels tight at first, it’s probably
a good fit. If it feels loose, it’s too small.
-When a plug is properly fitted, your voice sounds lower and muffled as though
you were in a barrel
-Movement, talking and chewing can all loosen the plugs, so take them out
and refit them several times during the day.
Explain some factors for a properly fitting ear muff:
-It must be a good fit.
- Push your hair back so the cuffs fit comfortably and make a good seal around your ear.
- Make sure the cuffs aren’t resting on anything that will break the seal and let noise in, such as a hardhat suspension band, hair band or barrette.
- If you wear glasses, try wearing the kind with thin wire temple pieces
From James’ slides and maybe important:
‘A’ weighting, filters out the low frequencies and slightly emphasises the upper middle frequencies around 2-3 kHz.
By comparison, ‘C’ weighting is almost unweighted, or no filtering at all.
: )
3 Basic elements of WHMIS
Labels
SDS (Safety Data Sheets)
Education
Respiratory Protection Acronym SCBA stands for:
Self Contained Breathing Apparatus
helpful tip: In SCUBA, U = underwater!
Successfully trained students should be able
to answer these 4 key questions about WHMIS/SDS:
-What are the hazards of the product you are using?
-How do you protect yourself?
-What should you do in case of an
emergency or spill?
-Where do you get more information on this product?
